fix(topdata): target git.westgate.pw and stub released parts manifest in tests

The reprovision retired gitea.westgate.pw in favour of git.westgate.pw, but
internal/topdata still defaulted to the old host and made a live API call
during the native buildability check, so once CI checkout was fixed the
parts tests failed (DNS, then HTTP 404).

- defaultGiteaBaseURL -> https://git.westgate.pw; normalize git-ssh. -> git.
- Add stubEmptyPartsManifest (stub_test.go) and call it from the 2 non-optional
  parts tests so they exercise the build offline. Per-test (t.Setenv) on
  purpose: a global TestMain SOW_ASSETS_SERVER_URL would override the
  git-remote-derived server other tests configure. VFX tests already pass
  (optional consumer ignores HTTP 404).

make check + make smoke green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

internal/topdata/parts_manifest.go

@@ -18,7 +18,7 @@ import (
 const (
 	defaultSowAssetsRepoOwner   = "ShadowsOverWestgate"
 	defaultSowAssetsRepoName    = "sow-assets"
-	defaultGiteaBaseURL         = "https://gitea.westgate.pw"
+	defaultGiteaBaseURL         = "https://git.westgate.pw"
 	partsManifestReleaseTag     = "parts-manifest-current"
 	partsManifestAssetName      = "sow-parts-manifest.json"
 	partsManifestCacheFileName  = "sow-parts-manifest.json"
@@ -148,7 +148,7 @@ func parseRepoSpec(raw string) (giteaRepoSpec, bool) {
 func normalizeGiteaHTTPHost(host string) string {
 	host = strings.TrimSpace(host)
 	if strings.HasPrefix(host, "git-ssh.") {
-		return "gitea." + strings.TrimPrefix(host, "git-ssh.")
+		return "git." + strings.TrimPrefix(host, "git-ssh.")
 	}
 	return host
 }

internal/topdata/parts_manifest_test.go

@@ -7,7 +7,7 @@ func TestParseRepoSpecNormalizesWestgateSSHHostToPublicGiteaHost(t *testing.T) {
 	if !ok {
 		t.Fatal("expected SSH remote to parse")
 	}
-	if spec.BaseURL != "https://gitea.westgate.pw" {
+	if spec.BaseURL != "https://git.westgate.pw" {
 		t.Fatalf("expected public Gitea base URL, got %q", spec.BaseURL)
 	}
 	if spec.Owner != "ShadowsOverWestgate" || spec.Repo != "sow-module" {

internal/topdata/stub_test.go

@@ -0,0 +1,35 @@
+package topdata
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+// stubEmptyPartsManifest points the released-parts-manifest fetch at a local
+// httptest server that serves an empty (but structurally valid) manifest, so a
+// build/compare test exercises native build behaviour without reaching the live
+// Gitea host. Use it in tests that build the non-optional `parts` consumer but
+// do not depend on any released part rows.
+//
+// It is per-test (t.Setenv) on purpose: a package-global SOW_ASSETS_SERVER_URL
+// would override the git-remote-derived server that other tests configure.
+func stubEmptyPartsManifest(t *testing.T) {
+	t.Helper()
+	var srv *httptest.Server
+	srv = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/api/v1/repos/ShadowsOverWestgate/sow-assets/releases/tags/parts-manifest-current":
+			w.Header().Set("Content-Type", "application/json")
+			_, _ = w.Write([]byte(`{"assets":[{"name":"sow-parts-manifest.json","browser_download_url":"` + srv.URL + `/dl/sow-parts-manifest.json"}]}`))
+		case "/dl/sow-parts-manifest.json":
+			w.Header().Set("Content-Type", "application/json")
+			_, _ = w.Write([]byte(`{"repo":"ShadowsOverWestgate/sow-assets","ref":"main","categories":{"belt":[],"bicep":[],"chest":[],"foot":[],"forearm":[],"leg":[],"neck":[],"pelvis":[],"robe":[],"shin":[],"shoulder":[]}}`))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	t.Cleanup(srv.Close)
+	t.Setenv("SOW_ASSETS_SERVER_URL", srv.URL)
+	t.Setenv("SOW_ASSETS_REPO", "ShadowsOverWestgate/sow-assets")
+}

internal/topdata/topdata_test.go

@@ -2499,6 +2499,7 @@ func TestBuildReferenceAndCompareReference(t *testing.T) {
 
 func TestCompareReferenceHandlesMixedModeOutputListMismatch(t *testing.T) {
 	root := testProjectRoot(t)
+	stubEmptyPartsManifest(t)
 	mkdirAll(t, filepath.Join(root, "topdata", "data", "parts"))
 	writeFile(t, filepath.Join(root, "topdata", "base_dialog.json"), "{}\n")
 	writeFile(t, filepath.Join(root, "topdata", "data", "parts", "belt.json"), `{
@@ -2834,6 +2835,7 @@ func TestBuildAppliesNonTLKOverrides(t *testing.T) {
 
 func TestBuildFallsBackWhenProjectMigrationIsIncomplete(t *testing.T) {
 	root := testProjectRoot(t)
+	stubEmptyPartsManifest(t)
 	mkdirAll(t, filepath.Join(root, "topdata", "data", "parts"))
 	writeFile(t, filepath.Join(root, "topdata", "base_dialog.json"), "{}\n")
 	writeFile(t, filepath.Join(root, "topdata", "data", "parts", "belt.json"), `{
@@ -13470,7 +13472,7 @@ func TestBuildNativeRejectsGitRepoTopDataAssetsOverride(t *testing.T) {
 	writeFile(t, filepath.Join(root, "reference", "build.py"), "print('ok')\n")
 
 	proj := testProject(root)
-	proj.Config.TopData.Assets = "ssh://git@gitea.westgate.pw:2222/ShadowsOverWestgate/sow-assets.git"
+	proj.Config.TopData.Assets = "ssh://git@git.westgate.pw:2222/ShadowsOverWestgate/sow-assets.git"
 
 	_, err := BuildNative(proj, nil)
 	if err == nil || !strings.Contains(err.Error(), "no longer supports git repo specs") {